Gamma Irradiation Effect on Structural and Optical Properties of Bismuth-Boro-Tellurite Glasses

The changes of the optical and structural properties of Bismuth-Boro-Tellurite glasses pre and post gamma irradiation were studied. Six glass samples, with different composition [(TeO2)0.7 (B2O3)0.3]1-x (Bi2O3)x prepared by melt quenching method were irradiated with 25kGy gamma radiation at room temperature. The Fourier Transform Infrared Spectroscopy (FTIR) was used to explore the structural bonding in the prepared glass samples due to exposure, while UV-VIS Spectrophotometer was used to evaluate the changes in the optical properties before and after irradiation. Gamma irradiation causes profound changes in the peak intensity as shown by FTIR spectra which is due to the breaking of the network bonding. Before gamma irradiation, the optical band gap, Eg value decreased from 2.44 eV to 2.15 eV with the addition of Bismuth content. The value kept decreasing (from 2.18 eV to 2.00 eV) following exposure to gamma radiation due to the increase of non-bridging oxygen (NBO) and the increase of defect in the glass. In conclusion, the glass with high content of Bi2O3 (0.30Bi) give smallest Eg and show less changes in FTIR spectra after gamma irradiation which indicate that this glass is more resistant to gamma radiation compared to other glasses.

Authors:

• A. Azuraida
• M. K. Halimah
• C. A. C. Azurahanim
• M. Ishak

Keywords:

• Boro-Tellurite
• bismuth
• gamma radiation
• optical properties.

References:

[1] Z. A. El-Hadi, “Gamma Ray Interaction with Some High-Lead Glasses
Containing Chromium Ions,” Journal of Solid State Chemistry, vol 163,
351–363, June 2001.
[2] N.A. El-Alaily, and R.M. Mohamed, “Effect of irradiation on some
optical properties and density of lithium borate glass,” Materials Science
and Engineering, vol. B98, pp. 193–203, Aug. 2003.
[3] M. I. A. El-Ati, and A. A. Higazy, “Electrical conductivity and optical
properties of gamma-irradiated niobium phosphate glasses,” Journal of
Materials Science, vol. 35, pp.6175–6180, May 2000.
[4] E. V. K. Susan, and S.W. Martin, “Preparation and characterization of
high density PbO–Bi2O3–B2O3 glasses,” J. Am. Ceram. Soc., vol. 75, pp.
1028–1031, Jan. 1992.
[5] A. Azuraida, M. K. Halimah, and A. Nurazlin, “Optical Properties of
[(TeO2)0.7 (B2O3)0.3]1-x (Bi2O3)x Glass System(Periodical style—Accepted
for publication),” Trans. Tech, Advanced Materials Research., to be
published
[6] M. K. Halimah et al., “Optical Properties of Lithium Borate Glass
(Li2O)x (B2O3)1-x,” Sains Malaysiana, vol. 43, no. 6, pp. 899–902, Jan.
2014.
[7] H. M. Oo, H. M. Kamari, and W. M. D. W. Yusoff, “Optical Properties
of Bismuth Tellurite Based Glass,” Int. J. Mol. Sci., vol. 13, pp 4623–
4631, March 2012.
[8] S. M. Iskandar, M. K. Halimah, W. M. D. W. Yusoff, H.A.A. Sidek and
A. R. Azhar, “Structural and Optical Properties of Lead-Boro-Tellurrite Glasses Induced by Gamma-Ray,” Int. J. Mol. Sci. vol. 14, 3201–3214.
Jan. 2013.
[9] M.K. Halimah, W.M. Daud, H.A.A. Sidek, A.W. Zaidan, and A.S.
Zainal, “Optical properties of ternary tellurite glasses,” Materials
Science-Poland, vol. 28, no. 1, Aug. 2009.
[10] A.M. Abdelghanya, F.H. ElBatal, H.A. ElBatal, and F.M. EzzElDinc,
“Optical and FTIR Structural Studies of CoO-doped Sodium Borate,
Sodium Silicate and Sodium Phosphate Glasses and Effects of Gamma
Irradiation-A Acomparative Study,” Journal of Molecular Structure vol.
1074, pp. 503–510, June 2014.
[11] V. Thakur, L. Singh, M. Kaur, S.P. Lochab, and A. Singh, “Effect of
Gamma Irradiation on Optical Properties of Barium Titanate Modified
Bismuth Borate Glasses, ” IJEAR vol. 4, issue 2, 2014.